| Value | Category | Cases | |
|---|---|---|---|
| 0 | no | 1255 | 
                                                                 
                                    
                                    96.5%
                                 
                                                             | 
                                                        
                    
| 1 | yes | 45 | 
                                                                 
                                    
                                    3.5%
                                 
                                                             | 
                                                        
                    
| Sysmiss | 357 |